Photographers' Formulary Glass Beaker - 1000ml Tweet Description The Photographer's Formulary 1000ml Beaker is a quality heat-treated glass beaker for measuring and mixing solutions and powders. This beaker has double scale graduations in both milliliters and ounces. Details Additional Category Tags: Developing & Processing, Developing & Processing Supplies, Graduates Category: Photography Manufacturer Catalog Number: 09-0105 Product Manufacturer: Photographers' Formulary Subcategory: Darkroom Equipment